Display having a graphical user interface



FIG. 1 is a front view of an embodiment of a display having a graphical user interface; and,

FIG. 2 is a front view of another embodiment of a display having a graphical user interface.

The dot-dash broken lines illustrate a display screen and the boundary of the claimed design, and form no part of the claim. The remaining broken lines, including the text, numbers, and lower-most small circles in both figures, and the arrows and central horizontal line in FIG. 1, illustrate portions of the graphical user interface and form no part of the claimed design. 

CLAIM We claim the ornamental design for a display having a graphical user interface, as shown and described. 